Creating and manipulating pdf files via PyPDF2 and FPDF

Anvil Q&A
2

Hi Niels,

The following examples work for me in Python 3:

# trying PyPDF2 
@anvil.server.callable
def test_pdf_read():
  pdf_bytes = app_files.foo.get_bytes()

  # Create a BytesIO object that can be used directly as a file
  file = io.BytesIO(pdf_bytes)
  pdfReader = PyPDF2.PdfFileReader(file)
  print(pdfReader.numPages)
  
# trying FPDF
@anvil.server.callable
def make_pdf():
  pdf = FPDF()
  pdf.add_page()
  pdf.set_font('Arial', 'B', 16)
  pdf.cell(40, 10, 'Hello World!')
  byte_string = pdf.output(dest='S').encode('latin-1')

  # Create an Anvil Media object from the encoded bytes.
  pdf_media = BlobMedia("application/pdf", byte_string, name="new_file.pdf")
  # Create a Google Drive file from the Media object
  app_files.folder.create_file("HelloWorld.pdf", pdf_media)

I do get an encoding error if I try the .encode('latin-1') function call in Python 2, but I didn’t investigate that further. If you have a requirement for Python 2, let me know.

Does that solve your problem? Let me know if anything remains unclear.

- Thanks, Ian.